heartbeat

noun

heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
Synonyms of heartbeatnext
1
: one complete pulsation of the heart
2
: the vital center or driving impulse
3
: a brief space of time : flash
used chiefly in the phrase in a heartbeat

Examples of heartbeat in a Sentence

The patient had a rapid heartbeat. I'd accept a job offer from that company in a heartbeat.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Lucy had tubes all over her body, and a nurse was trying to establish a heartbeat. Grethel Aguila, Miami Herald, 9 June 2026 This is the most fearsome repertoire in all of pop music, and Nilles supplied its heartbeat and muscle, and most of its nuance. Joshua Rothkopf, Los Angeles Times, 8 June 2026 The DeKalb County coroner determined the cause of death was an irregular heartbeat triggered by coronary artery disease. Carrie Teegardin, AJC.com, 8 June 2026 But the heartbeat of the show was the bond between the Angels. David Moin, Footwear News, 8 June 2026 See All Example Sentences for heartbeat

Word History

First Known Use

1821, in the meaning defined at sense 1

Time Traveler
The first known use of heartbeat was in 1821

Browse Nearby Words

Cite this Entry

“Heartbeat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heartbeat. Accessed 15 Jun. 2026.

Kids Definition

heartbeat

noun
heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
: a single contracting and expanding of the heart

Medical Definition

heartbeat

noun
heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
: one complete pulsation of the heart

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